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SSM2167-1RMZ-REEL

Low Voltage Microphone Preamplifier with Variable Compression & Noise Gating

Manufacturer: AD
Mfr.Part #: SSM2167-1RMZ-REEL
Datasheet: SSM2167-1RMZ-REEL Datasheet (PDF)
Package/Case: MSOP-10
Product Type: Amplifier ICs
RoHS:
Lifecycle: Active
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Email: [email protected]

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SSM2167-1RMZ-REEL General Description

The SSM2167 is a complete and flexible solution for conditioning microphone inputs in personal electronics and computer audio systems. It is also excellent for improving vocal clarity in com-munications and public address systems. A low noise voltage controlled amplifier (VCA) provides a gain that is dynamically adjusted by a control loop to maintain a set compression characteristic. The compression ratio is set by a single resistor and can be varied from 1:1 to over 10:1 relative to the fixed rotation point. Signals above the rotation point are limited to prevent overload and to eliminate popping. A downward expander (noise gate) prevents amplification of background noise or hum. This results in optimized signal levels prior to digitization, thereby eliminating the need for additional gain or attenuation in the digital domain. The flexibility of setting the compression ratio and the time constant of the level detector, coupled with two values of rotation point, make the SSM2167 easy to integrate in a wide variety of microphone conditioning applications.

Key Features

Complete microphone conditioner in a 10-lead package
Single 3 V operation
Low shutdown current < 2 μA
Adjustable noise gate threshold

Application

Desktop, portable, or palmtop computers
Telephone conferencing
Communication headsets
Two-way communications
Surveillance systems
Karaoke and DJ mixers

Specifications

Product Category	Microphone Preamplifiers	RoHS	Details
THD plus Noise	0.2 %	Package / Case	MSOP-10
Supply Voltage - Max	5.5 V	Supply Voltage - Min	2.5 V
Mounting Style	SMD/SMT	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C	Series	SSM2167
Available Set Gain	40 dB	Brand	Analog Devices
Development Kit	SSM2167Z-EVAL	GBP - Gain Bandwidth Product	1 MHz
Height	0.85 mm	Length	3.1 mm
Operating Supply Current	2.3 mA	Operating Supply Voltage	2.5 V to 5.5 V
Product Type	Microphone Preamplifiers	PSRR - Power Supply Rejection Ratio	45 dB
Factory Pack Quantity	3000	Subcategory	Audio ICs
Width	3.1 mm	Unit Weight	0.005051 oz